But at this point the jailbreak stops being "just a single file", right? And how do you force the Kindle software to check for the private key in the new partition? I'd imagine that they usually lie in a set position on the system or data partition, probably the root home folder?
I'd just like to understand the inner workings, of both, the jailbreak and the Kindle OS a bit better.
And what do you mean by "takes care of the back up"? Can I reflash the image whenever I feel like it?